Mid-Fifties Portfolio by Burton Malkiel
The Mid-Fifties Portfolio is one of the age-based model allocations from Burton Malkiel's A Random Walk Down Wall Street. Malkiel, a Princeton economics professor and long-time advocate of passive investing, designed this allocation for investors who are approaching the later stages of their career — typically in their mid-fifties — when retirement is a decade or so away and preserving accumulated wealth begins to take on more importance alongside continued growth.
Investment Philosophy
Malkiel's life-cycle approach holds that investors should gradually reduce equity exposure as they age, shifting toward bonds and other lower-volatility assets as the time horizon shortens. For investors in their mid-fifties, this means maintaining a meaningful but no longer dominant equity allocation — typically in the 50-60% range — while increasing the bond portion compared to earlier life stages. The portfolio continues to include a diversified mix of domestic and international equities, reflecting Malkiel's belief in the benefits of global diversification.
Who It's For
This portfolio is designed for investors in their mid-fifties, roughly ten to fifteen years from retirement. It suits those with a moderate risk tolerance who want to continue participating in equity market growth while beginning to protect against the risk of a severe market downturn close to their retirement date.
Pros
- Balanced equity-bond allocation appropriate for a medium time horizon
- Reduced equity exposure compared to earlier-stage portfolios helps protect accumulated wealth as retirement approaches
- Simple, straightforward structure that is easy to implement with index funds
Cons
- The recommended allocation may be too conservative for investors who have retirement income from pensions or other sources and can afford more equity risk
- No factor tilts or alternative asset class exposure beyond the standard equity-bond structure
- Generic age-based heuristics do not account for individual financial circumstances, health, or spending needs
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Target Allocation
Performance Snapshot
Rolling Returns
| Period | Low | Average | High |
|---|---|---|---|
| 1 Year | -37.2% | +8.2% | +53.2% |
| 3 Year | -10.3% | +7.2% | +22.8% |
| 5 Year | -1.9% | +7.1% | +17.9% |
| 10 Year | +2.4% | +7.2% | +11.8% |
Growth of $10,000
Historical Drawdown
Percentage decline from the portfolio's peak value at each point in time.
Rolling Returns
Annualised return for each rolling period ending on that date.
Annualised return for each 1Y period ending on that date.